show region
If the address reported by the bus error does not fall within the ranges displayed in the show region output, this means that the router was trying to access an address that is not valid. This indicates that it is a Cisco IOS software problem.
More detailed information is available on Cisco.com in Tech Note #7949, Troubleshooting Bus Error Crashes.
Examples | The following is sample output from the show region command: |
| Router# show region |
| Region Manager: |
Start | End | Size(b) | Class | Media | Name |
0x40000000 | 0x40001FFF | 8192 | Iomem | REG | qa |
0x40002000 | 0x401FFFFF | 2088960 | Iomem | R/W | memd |
0x48000000 | 0x48001FFF | 8192 | Iomem | REG | qa:writethru |
0x50002000 | 0x501FFFFF | 2088960 | Iomem | R/W | memd:(memd_bitswap) |
0x58002000 | 0x581FFFFF | 2088960 | Iomem | R/W | memd:(memd_uncached) |
0x60000000 | 0x6FFFFFFF | 268435456 | Local | R/W | main |
0x600109C8 | 0x611BEBE1 | 18539034 | IText | R/O | main:text |
0x611C0000 | 0x61642C7F | 4729984 | IData | R/W | main:data |
0x61642C80 | 0x6186607F | 2241536 | IBss | R/W | main:bss |
0x61866080 | 0x6188607F | 131072 | Local | R/W | main:fastheap |
0x61886080 | 0x6FFFFFFF | 242720640 | Local | R/W | main:heap |
0x80000000 | 0x87FFFFFF | 134217728 | Local | R/W | main:(main_k0) |
0x88000000 | 0x88001FFF | 8192 | Iomem | REG | qa_k0 |
0x88002000 | 0x881FFFFF | 2088960 | Iomem | R/W | memd:(memd_k0) |
0xA0000000 | 0xA7FFFFFF | 134217728 | Local | R/W | main:(main_k1) |
0xA8000000 | 0xA8001FFF | 8192 | Iomem | REG | qa_k1 |
0xA8002000 | 0xA81FFFFF | 2088960 | Iomem | R/W | memd:(memd_k1) |
Related Commands | Command | Description |
| show context | Displays information stored in NVRAM when an unexpected system reload |
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| (system exception) occurs. |
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| show memory | Displays detailed memory statistics for the system. |
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| show version | Shows hardware and software information for the system. |
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| Cisco IOS Configuration Fundamentals Command Reference |
| July 2008 |
